This is a combined Windows 32/64 bit binary build of the 2018-12-18
r75860 development snapshot of R (which will eventually become
R-3.6.0).

This is a development version of R. It likely contains
bugs, so be careful if you use it. Please don't report bugs
in this version through the usual R bug reporting system, please report
them on the r-devel mailing list---but only if they persist for a few days.